Carbureter.



ruiner 1v.. BA'rTEBsoN, .or

COLUMBUS, oHIo, .ass'rernonJ or ONBTHALF To B. WYCLIFB mwa/MAN, or COLUMBUS, omo.

CARBUBETEB.

` Specication of Letters Patent.

Patented May 22 191 '7.

Application led March 12, 1914. Serial No. 824,178.v

To all whom it may concern:

Beit known that I, HARRY RIPATTnnsoN, a citizen of theUnited States, residing at Columbus, in the` county of Franklin and State of Ohio,'have invented certain neviT and useful Improvements in Carbureters, of which the following is a specification.

My invention relates to carbureters and has for its object the provision of an instrulnent'of this type whereby the gasolene "apors may be more thoroughly and lmore eliiciently mixed with the correct amount of air to produce a highly explosive mixture.

One of the novel features of my invention resides in the provision of a plurality of vcnturis for reducing the pressure at a corresponding number of points to increase the volatilization of the atomized fluid. In this connection, I have also gone a'step farther and provided-a structure whereby these ve turis are spaced from each other'and also whereby an auxiliary amount of air is in' troduced in the mixture, the point of com munication of this auxiliary air with the mixture being between these spaced venturis. It is well known that the pressure of liowing gases on the larger lside of a venturi is considerably decreased from that of the smaller side and because of this reduced pressure, a vapor-ization of any suspended fluid itself is much more readily effected. This vaporiza-tion is also enhanced somewhat by the introduction of an auxiliary air supply and after the introduction of this auxiliary air, it is my aim to again pass the combined mixture through a second venturi Another object of my invention resides in providing a valve for controlling the aux iliary air supply, this valve heilig adjustably held in its closed position. By varying the adjustment and consequently varying the tension by which this valve is hield closed` the auxiliary air may be correspondingly varied, depending upon the suction of the engine to which the carbureter, asffa whole, is attached. l

The preferred embodiment ot' my invention is shown in the accompanying drawings, in which similar characters of reference designate corresponding parts", and in which:

Figure 1 is a central vertical section of one form of my carbureter, and; ,y

Fig. 2 is a top plan view shown partially in section, this section being taken on line- 2-2 ofMFig. 1. v

In'the drawings, there is shown the ordinary boWlor fuel 'reservoir l, this fuel reservoir being provided with a fuel inlet pipe 2 and an inspection cap 3. As is usual, the

inside. end of the fuel pipe 2 is concaved as" at -l to form a seat for an admission -val've 5, this valve being controlled in its movement by a float' 6. I do not claim anything new in this portion of the structure, but have merely shown one form for the purpose of illustration, thisn taking thel form of a lever- 7 fulcrumed as at 8 upon the body of the bowl and being pivotally connected to both the float 6 and the valve stem 5 by means of pin and slot connections, such as are shown at Sil and 9 respectively.

This bowl 1 is so 'formed 'to receive in working relation a vaporizing unit 10, this unit being formed with a hollow extension 11 at its lower end and an auxiliary air chamber 12 at its upper end. This hollow extension 11 is always in communication with the vaporizing unit itself and is also open to the atmosphere, as is shown -at 13, but carries a fuel intake structure normally in .communication with the fuel reservoir 1. This intake structure is shown in the integrail formation l-.l extending transversely across the extensionV 11 and heilig bored as is shown at-l. Passing vertically into the integral formation 1J.: is the mechanism for controlling the amount of lgasolem: normally allowed to enter the vaporizing unit from.

the fuel reservoir. this structure being shown by the tube 16 extending downwardly and the tube 17 extending upwardly and cen-- trally through the extension 11 of the vaporizing unit 10. The upper end of the tube 17 is partially closed leaving only a small openinglS which is adapted td coperate with the needle valve shown at 19, y

Ift will be apparent that suction from the engine will cause the flow of gasolcne through the opening 1S.' the amount depend'- ing upon the adjustment of theneedle valve 19 and also will draw in a quantityof air through the open end 13 of the extension 11.

Where this incoming air and the fuel` are iliary air chamber 12 by means of theidisk.-

valve shown-at 21. v This valve is provided 'y with a sleeve22 adapted to it over and be .guided by a vertically extending stem 23,.

The manner of controlling the opening inclosing this lvalv-e will be .hereinafterdei terior of the vaporizing unit. The venturi y l0 forms a portion of this unit,jas does the cap structure shown at 25, which cap structure is provided4 with a Haring hood 26 adapted to envelop the upper open portion of lthe first venturi and forming the inside wall of a concentric air chamber 2l. It is at this point where the auxiliary air supply mixes with a gaseous mixture and after this mixing, it is essential that it pass through a second venturi, this second venturi being shown at 27 and also as being carriediby the cap structure itself. The upper portion of the cap structure is so constructed that it may be readily attached in any desired manner to the manifold of the engine, the throttle valve being shown as being carried by this cap member and designated by the reference numeral 28. v

lThe manner of controlling the opening and closing of the auxiliary air valve 2l, may be regulated by the spring suspension, as shown more clearly in Fig. l. A at leaf spring 29 is securely attached toa portion of the cap member 25 as is shown, for instance, by the screw 30, while its other end isadapted to f pass through a slot 3l in a clevis 32, which *i clevis is pivotally attached to the upper end f of the sleeve 22 as at 33. The tension of this spring 29 may also be regulated somewhat bythe provision of the adjusting screw 34 passing through the upper end of the clevis and bearing upon the free end of the spring to cause it to be slightly bent. is further regulated by 'varying the length through which the' spring is permitted to deiect, this `being accomplished `by providing r an outwardly extending arm 35 upon which slides an adjusting member having a; slot 37 therein', the knife edge 38 formingV the),

This tension y bottom wall of this slot. Therefore, by sliding the adjusting member 36 'to any desired position upon the arm 35 and securing this member in such position by tightening of the screw 39, the distance through which the spring 29 is permitted to deflect is between y. the valve 21.

F romI the above, description, it will be apparent that I have provided a carbureter in which a primary and auxiliary air supply may be had when running under vcertain conditions and that a more thorough 'mixingA may be had by passing the mixture through a. venturi at such point where the air is caused to mix with the gaseous fluid, thus in'- suring amore perfect combustion of the engine. Also, the amount of'auxiliary air and the time at which this auixiliary air is permitted to mix, may be conveniently regulated by means of the mechanism'controlling the valve 21. 'l

l/Vhat I claim, is: I a

A carbureter comprising a fuel bowl, a vaporizing unit having a. primary air inlet, a spray nozzle structure in said unit and in communication with said bowl, a venturi in Ysaid unit encircling said structure, van auxiliary air intake valve, an air chamber leading from saidvalve and formed 1n said unit concentric with the upper .open end of said venturi, a second venturi in said unitwhose throat portion is substantially level with the top wall of said concentric air chamber, and a downwardly and outwardly flaring apron forming the lower end of said second named venturi and extending downwardly into said chamber and below the top edge of said rst named venturi in""spaced relation therewith. In testimony'whereof I aflix my signature in presence of*l two witnesses. l

HARRY R. PATTERSON.

Vitnesses: 4 Gr. E. VooLEsoNG, VALTER E. L. Booml f ii l 

